查询词典 impedance ratio

The impedance ratio and the meander could control the frequency of the second harmonic and the baseband ratio. According to that,we analyze several kinds of stepped impeedance resonator and use them to design the dual-band bandpass filters.In the thsis , The proposed bandpass filters and dual-band bandpass filters are designed for IEEE 802.11a/b wireless communicatuon system.

双频带带通滤波器是利用步阶阻抗谐振器之阻抗比与传输线之折线，可用来控制第二次谐波的频率与基频通带的比值，藉由改变阻抗比，来求得所要的第二次谐波，利用此特性，其中分析了几种不同形式的步阶阻抗谐振器，皆可用来设计双频带带通滤波器，带通滤波器与双频带带通滤波器是针对IEEE80211a与IEEE802.11b无线区域网路所设计。

The transfer function of the LLC resonant converter can be obtained by using the circuit impedance, ratio of resonant inductance, and quality factor. With proper selection of the resonant tank and modulation of the operation switching frequency, the proposed circuit can achieve zero voltage switching, stabilize the output voltage, and then reduce the switching loss.

其后级之半桥LLC谐振式转换器藉由推导电路阻抗、谐振电感比例值与品质因数得到转移函数，以及利用适当的谐振电路的设计与切换频率的调变的方式达到输出电压稳定，并且令功率开关具有零电压切换之功用，以降低功率开关的切换损失。

We define a new parameter, the impedance ratio r, and observe its importance in realization of the filter.

我们定义了一个新参数-特性阻抗的比例，并且发现了它在实现滤波器的重要性。

Only acoustic impedance ratio or acoustic impedance ratio can not control band gaps.

仅以声阻抗比或波速比的大小不能决定带隙的存在和大小。

The results show that for a certain depth and damping coefficient, if the wave impedance ratio is small, the seismic re...

计算结果表明，对于一定的土层厚度，在一定阻尼比条件下，土层和基岩的阻抗比小到一定程度时，可以将基岩假定为刚性约束，而误差可以控制在一定的范围内。

Bandwidth depends on impedance ratio, and it is easy to realize high and low impedance in CPW by spacing the gaps and shunting more transmission lines.

频宽取决於阻抗的比值，共平面波导结构可以轻易的实现高阻抗和低阻抗，达到宽频的效果。

It also provides more flexibility to allocate the resonate frequencies of interest and broader bandwidths at each operation frequency as the impedance ratio of the SIR changes.

通过调节SIR上传输线的阻抗，可以在工作的双频段上灵活地调节耦合器谐振频率的位置和耦合器的带宽。

Random boundary ; seismic response of soil layer ; wave impedance ratio

随机边界；土层地震反应；波阻抗比

The more difference of the impedance ratio or velocity ratio, the better wave isolation is.

对於土壤与填充槽沟材质间之相关影响参数来说，土壤与填充槽沟材质间之阻抗比差异越大，对於震波阻隔效果越佳。

A prominent feature of this filter is that the spurious response can be controlled by the impedance ratio K of the resonator, thereby the performance for harmonic suppression is improved.

这种滤波器的特点是其寄生响应可以通过阻抗比K进行控制，因而增进了谐波抑制性能。

We are interested in your suggestions about appointing us to be the single dealer.

对贵方建议由我方担任独家经销商一事，我们颇感兴趣。

Three types of empty-shell marriages have been identified. In a devitalized relationship husband and wife lack excitement or any real interest in their spouse or their marriage.

一种是死气沉沉的婚姻：在这种婚姻关系中夫妻俩对于配偶或婚姻缺乏激情，或者缺乏真正的兴趣。